From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 114F0C001DC for ; Wed, 26 Jul 2023 06:24:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:To:Subject:Cc:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=jHE4ifgeI/B89lNGYP3bM4hAIF8IGE66Vn32oQRoea8=; b=tMmWmavyoPEjZf/ddIikKV9f4X ovvpu1FXYGGxC1zpRP58H2zhzhdE8zuzbwUo7TvBDAhNojjRY0XLaL/z9R0oHPg0ml36Ew66/YAYz szqtL2J1JroRxB1003aRgmEKzRz8JwPqw/6aisX+lto6gkS8VlsjiDGX4zESz5g/5mryzNtO57BMH yL4J8lpszjX9qj9XqYFPqcN5soRllC1yyx32zDV9RawdeBEcvP2W8dg3Z537Br636+VcAFnJBFGig 0Z4xm6OAXHB2TajFCa6lpzYNLowjPtC/Hy/GtjqNAerZo0YcZMGeVEqt68buRqs/0nVBSrQiDX4Jt 3z97U9aQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qOXx8-009Gya-0E; Wed, 26 Jul 2023 06:24:54 +0000 Received: from mga11.intel.com ([192.55.52.93]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qOXx5-009Gxo-0r; Wed, 26 Jul 2023 06:24:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690352691; x=1721888691; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=DlKsXPAKvUQNyaHWuLEMn+YeZGej9B0RE5XdM6qJwbQ=; b=nWEXH6rISGKk5FAk9lagKzd9ej9n4mwISYNRxWjoMZpXBH0jmsApEWIO yo20kK4mMKGEJUFSGU/Qufz9OJydm4mH425BKEMKcbetqqJ/VD33ee1s0 jtoXUHNHceKQh32YYKPG8Y+yi/p5SdAzznZ3nr54PhekTWsW4bMrST5ZD d38jwlDP1uLtypsYnc2cwOoiy6qq+tYgBWhw7mecMOoUXgzcH+VcBe4mg pDqEGP84+uVAMUZN0W1D1e2eEsXodVieTehzHIFschPr+3H73oR7lCtp+ 3dImfbqTrjD9SGYR9V4UtUfjijXvHAGZ9kaIjbSc9pJc7UC/9B9zKqag2 A==; X-IronPort-AV: E=McAfee;i="6600,9927,10782"; a="365384338" X-IronPort-AV: E=Sophos;i="6.01,231,1684825200"; d="scan'208";a="365384338" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2023 23:24:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10782"; a="1057075644" X-IronPort-AV: E=Sophos;i="6.01,231,1684825200"; d="scan'208";a="1057075644" Received: from blu2-mobl.ccr.corp.intel.com (HELO [10.254.208.129]) ([10.254.208.129]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2023 23:24:20 -0700 Message-ID: <7186790f-abed-61ba-2d19-6ab66640f30a@linux.intel.com> Date: Wed, 26 Jul 2023 14:24:18 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Cc: baolu.lu@linux.intel.com, Dmitry Osipenko , Marek Szyprowski , Nicolin Chen , Niklas Schnelle , Steven Price , Thierry Reding Subject: Re: [PATCH v5 02/25] iommu: Add IOMMU_DOMAIN_PLATFORM Content-Language: en-US To: Jason Gunthorpe , Andy Gross , Alim Akhtar , Bjorn Andersson , AngeloGioacchino Del Regno , Baolin Wang , Christophe Leroy , Gerald Schaefer , Heiko Stuebner , iommu@lists.linux.dev, Jernej Skrabec , Jonathan Hunter , Joerg Roedel , Kevin Tian , Konrad Dybcio , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, Russell King , linuxppc-dev@lists.ozlabs.org, Matthias Brugger , Matthew Rosato , Michael Ellerman , Nicholas Piggin , Orson Zhai , Rob Clark , Robin Murphy , Samuel Holland , Thierry Reding , Krishna Reddy , Chen-Yu Tsai , Will Deacon , Yong Wu , Chunyan Zhang References: <2-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> From: Baolu Lu In-Reply-To: <2-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230725_232451_312416_54D56C31 X-CRM114-Status: GOOD ( 13.19 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On 2023/7/25 1:21, Jason Gunthorpe wrote: > This is used when the iommu driver is taking control of the dma_ops, > currently only on S390 and power spapr. It is designed to preserve the > original ops->detach_dev() semantic that these S390 was built around. > > Provide an opaque domain type and a 'default_domain' ops value that allows > the driver to trivially force any single domain as the default domain. > > Signed-off-by: Jason Gunthorpe > --- > drivers/iommu/iommu.c | 14 +++++++++++++- > include/linux/iommu.h | 6 ++++++ > 2 files changed, 19 insertions(+), 1 deletion(-) Reviewed-by: Lu Baolu